Tetrastichus lacustrinus, Hansson & Schmidt, 2020

Hansson, Christer & Schmidt, Stefan, 2020, A revision of European species of the genus Tetrastichus Haliday (Hymenoptera: Eulophidae) using integrative taxonomy, Biodiversity Data Journal 8, pp. 59177-59177 : 59177

Tetrastichus lacustrinus sp. n.

Materials

Type status: Holotype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-21587-E06; catalogNumber: BC-ZSM-HYM-21587-E06 ; recordNumber: BC-ZSM-HYM-21587-E06; recordedBy: C.Hansson; individualID: BC-ZSM-HYM-21587-E06; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichuslacustrinus; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; taxonRemarks: Holotype deposited in MZLU; Location: country: Sweden; decimalLatitude: 55.802; decimalLongitude: 13.747; Record Level: type: PhysicalObject; language: en; institutionCode: MZLU; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-21587-B11; catalogNumber: BC-ZSM-HYM-21587-B11 ; recordNumber: BC-ZSM-HYM-21587-B11; recordedBy: C.Hansson; individualID: BC-ZSM-HYM-21587-B11; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichuslacustrinus; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 56.714; decimalLongitude: 16.763; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-21587-E01; catalogNumber: BC-ZSM-HYM-21587-E01 ; recordNumber: BC-ZSM-HYM-21587-E01; recordedBy: C.Hansson; individualID: BC-ZSM-HYM-21587-E01; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichuslacustrinus; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 55.834; decimalLongitude: 13.528; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-21587-A09; catalogNumber: BC-ZSM-HYM-21587-A09 ; recordNumber: BC-ZSM-HYM-21587-A09; recordedBy: C.Hansson; individualID: BC-ZSM-HYM-21587-A09; individualCount: 1; sex: female; lifeStage: adult; Taxon: scientificName: Tetrastichuslacustrinus; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 55.834; decimalLongitude: 13.528; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen Type status: Paratype. Occurrence: occurrenceDetails: http://www.boldsystems.org/index.php/API_Public/specimen?ids=BC-ZSM-HYM-29813-D09; catalogNumber: BC-ZSM-HYM-29813-D09 ; recordNumber: BC-ZSM-HYM-29813-D09; recordedBy: C. Hansson; individualID: BC-ZSM-HYM-29813-D09; individualCount: 1; sex: male; lifeStage: adult; Taxon: scientificName: Tetrastichuslacustrinus; phylum: Arthropoda; class: Insecta; order: Hymenoptera; family: Eulophidae; genus: Tetrastichinae; Location: country: Sweden; decimalLatitude: 55.6833; decimalLongitude: 13.4833; Record Level: type: PhysicalObject; language: en; basisOfRecord: PreservedSpecimen

Description

FEMALE holotype (Fig. 9). Body length 1.9 mm (paratypes 1.7-1.9 mm). Head. Width/length (dorsal view) 2.4, width/length (frontal view) 1.2, POL/OOL 2.0, widths head/mesosoma 1.1, mouth width/malar space 1.0, malar space/eye height 0.8. Antenna. Scape length/eye height 1.0, pedicel+flagellum length/mesosoma width 1.2, length/width F1, F2, F3 2.0, 1.9, 1.4, clava length/width 2.8, lengths pedicel/F1 0.9, lengths F1/F2 1.1, F1/F3 1.3, lengths F1, F2, F3/clava 0.6, 0.5, 0.4, widths F1/pedicel (dorsal view) 1.3, lengths antennal spicule/C3 0.3. Mesosoma. Length/width 1.5, mesoscutal mid-lobe length/width (width measured in anterior part) 0.9, mid-lobe with median groove in posterior ½, with six adnotaular setae on each side, lengths mesoscutum/mesoscutellum (measured medially) 1.2, mesoscutellum length/width 0.8, length/width of enclosed space between submedian grooves 2.2, distance between SMG/distance between SMG and SLG 1.7, lengths dorsellum/propodeum (measured medially) 0.4, propodeum with strong reticulation, propodeal callus with five setae. Fore wing. Costal cell length/width 10.0, lengths costal cell/marginal vein 1.0, lengths marginal/stigmal veins 3.1. Gaster. Subcircular to ovate, length/width 1.5, lengths gaster/mesosoma 1.0, Gt7 length/width 0.5, length of longest cercal seta/next longest seta 1.8, longest seta almost straight, ovipositor sheaths not protruding beyond apex of Gt7.

Colour. Body with weak coppery tinges, scape, flagellum and pedicel dark brown, tegulae dark brown, wings hyaline with veins yellowish-brown to brown, coxae black with metallic green tinges, trochanters dark brown, femora black, tibiae yellowish-brown, tarsi dark yellowish-brown to infuscate.

Variation. Paratypes with scape pale brown to yellowish-brown with dorsal edge brown, wing veins yellowish-white.

MALE. Body length 1.2 mm. Head. Width/length (dorsal view) 2.1, width/length (frontal view) 1.3, mouth width/malar space 1.1, eye height/malar space 1.3, widths head/mesosoma 1.1. Antenna. F1-F4 with basal whorls of setae, these setae reaching beyond apex of flagellomere attached to, scape length/eye height 1.0, scape length/width 2.6, ventral plaque placed in central part of scape, lengths ventral plaque/scape 0.8, length/width F1, F2, F3, F4 1.7, 1.8, 1.5, 2.0, lengths pedicel/F1 1.0, lengths F1/F2 0.9, F1/F3 1.1, F1/F4 0.8.

Diagnosis

Female with antennal clava (incl. spicule) 2.8 × as long as wide; POL/OOL 2.0; distance between SMG 1.7 × distance SMG to SLG; ovipositor sheaths not protruding beyond apex of Gt7.

Distribution

Sweden.

Ecology

Host

Unknown.

Notes

Holotype deposited in MZLU, paratypes in MZLU.